Method for the preparation of a piston made of aluminum alloy with its surface treated so as not to seize on contact with a cylinder with an internal wall made of aluminum alloy

摘要

A piston made of aluminum alloy with its surface treated by anodization in a phosphoric medium, onto which a layer of an anti-friction metal is deposited by electrolysis, so that the piston does not seize on contact with a cylinder with its internal wall made of aluminum alloy.